BORROWINGS - Notes (Details) - Notes - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
January 2026 Notes
Debt Instrument [Line Items]
Interest expense	$ 1,575	$ 1,575	$ 3,150	$ 3,150
Amortization of deferred financing costs	84	84	168	168
Total interest and amortization of deferred financing costs	$ 1,659	$ 1,659	$ 3,318	$ 3,318
Weighted average effective interest rate	4.46%	4.46%	4.46%	4.46%
Average borrowings	$ 140,000	$ 140,000	$ 140,000	$ 140,000
October 2026 Notes
Debt Instrument [Line Items]
Interest expense	1,266	1,266	2,531	2,531
Amortization of deferred financing costs	192	185	385	370
Total interest and amortization of deferred financing costs	$ 1,458	$ 1,451	$ 2,916	$ 2,901
Weighted average effective interest rate	3.50%	3.50%	3.50%	3.50%
Average borrowings	$ 150,000	$ 150,000	$ 150,000	$ 150,000
August 2028 Notes
Debt Instrument [Line Items]
Interest expense	1,393	1,393	2,785	1,640
Amortization of deferred financing costs	127	127	255	169
Total interest and amortization of deferred financing costs	$ 1,520	$ 1,520	$ 3,040	$ 1,809
Weighted average effective interest rate	7.75%	7.75%	7.75%	7.75%
Average borrowings	$ 71,875	$ 71,875	$ 71,875	$ 71,875